Spool holder



May 19, 1942.

B. H. KRAFFT sPooL HOLDER Filed July 5. 1940 Patented May 19, 1942 grana 2,233,373 Y srooL HOLDER Bert. H. Krat, Chicago, Ill., assigner, by direct and mesne assignments, to' Emeryk La Katos,

Newark, N. J.

Application Ililly 5, 1940, SerialgNo. 344,063l

6 Claims.

The invention relates to a yarn supporting device, andi more particularlyv to a bobbin holder for knitting machines or the like.

The invention has among its objects the protion 4. The horizontalportion 3 may be secured to the knitting machine or. other device by any suitable means, the'portion 3 being of the desired length to space the bobbin from the central duction of a holder of the kind described which 5 portion ofthe machine. is very simple in construction, inexpensive to Carried'by'thefvertical portion ll of` the memmanufacture, and very durable and ecient in ber I isa bob-bin engagingrnernber designated operation. generally by the numeral 5, the lower end ci the `Another object' of the 4invention is the promember terminating in a U-shaped portion'. duction of such. a holder which will readily revlO The litt'elfV iS provided With a peil 0f aligned ceive and firmly hold bobbins of various sizes apertures 'l through Wheh the vertical lJOltiOh t without necessitating any adjustments. of the supportingrod l extends. Passing through Another object of the invention isl the prothe intermediate part 3 0i the U-Sheped Pel'tOh duction of such a holder which may be readily 6. is a screw 9, the latter being threaded thillgh raisedor lowered as desired. a nut Il positioned adjacent the inner face of.

Many otherobjects and advantages ofthe conthe intermediate part 8. The hut il may, if struction herein shown and described will -be desired, be secured to the member' 5, or ir maobvious to those' skilled in the art from the disterial of suoient thickness is employed the Screw closure herein given. 9 may be threaded directly into the member 5. There have been, `in the past, numerous nold- However, as the nut is of approximately the same ers developed for supporting a yarn bebbn or size as. the intermediatepart 8, it. is prevented the like. However, suon holders did not readily by the horizontal lees of theA Shaped portion accommodate bobbins of Various sizes and shapes from rtitillg, S0 thataS the SClfeW 9 iS tightened without adjustments, or in numerous cases did dOWh, theeh'd theleOf Will engage the DOltOh a not securely sndnrmly hold the bottin on the of the member l, securely lookingv the memberk support. n the present construction the bobbin y 5 t0 the member engaging member may be readily formed from e The lOWeI leg l2 Gf the Urshhed hUltlOh eX: Y single piece of material and is so shaped that it tends o Substantial distance beyond the supportwill engage the bobbin at three distinct 'points ing ,Tod and iS then beh-t, aS Sl'lOWIl at i3, 11P- instead of engaging throughout the length of Waldlyehd Slightly ihWeClly tOWelCl the portion the holder, so that regardless of the sizeV and 4 Itis then bent, as ShOWl' at i4, Slightly 011t-Y snape of the bobbin, it will be yfirmly held in Wardly, thus providing a concave, upwardly eX- position with no tendency to slip oi of the holder, tending arm- It iS theh bent vvbeek VlllJOh itself The bobbin engaging member likewise is so conat l5 S0 that the free end l5 0f the member eX- structed that if desired it maybe raised or loW- tends downwardly and outwardly, the eXtreme ered on its supporting element, end being turned inwardly, as shown at |'i,. so To this end my invention consists in the novel that it Will not engage :the bObbih and hihllel"y construction, arrangement and combination of remOVal thereof- It Wm be noted that .the mem" parts herein shown and described, and more parbef 5 engages the bobbn B at three Points,- tieularlyrpointed out in the daims, 40 namely, adjacent the bends i3 and i3, as shown In the drawing, wherein like reference char-v at 2| and 22, respectively, and Oh theODDOSite acters indicate lke'or corresponding parts; Side of the bob-bin, asshown at 23f- Thus the Fig. 1 is aside elevational view of one embod- .conical bobbin B is Securely engaged at three iment ofthe present invention, showing the bob! VDOfltS, and as the membelis mede 0f ak Semebin in dotted lines; f 45 what flexible material, both of the points 22 and Fig. 2 is a front or end elevational View of the I 23 may mOVe With leSlJeCt t0 the Deiht 2l, the i same; and member in such a case bending at i3 and l5 Fig.V 3 is a sectionalfview taken substantially .and DOSSibly 1011 the upwardly extending poron the line 3 3 of Fig. 1. tion of the member. f 1 v Referring tothe drawing, I designates a sup- Thus the holder willreadily adjust itself to porting element or member, illustrated in the receive bobbins of different sizes land shapes. present instance, as a solid rod of cylindrical It might be mentioned that in the past holders cross section, the rod being bent, intermediate its of this type have `ordinarily engaged the bobbin ends as shown at 2 to provide a horizontally exthroughout the length of the holder and its retending portion 3 and avvertically extending por- 55 i spective arms or legs. Such holders, if designed for short and wide bobbins, did not firmly and securely hold the narrower and more pointed bobbins. Similarly, if designed for the narrow, more pointed bobbins, they did not as efficiently and firmly support the larger bobibns. There have also been holders of light spring Wire, which while capable of receiving different sized bobbins, due to their light construction, did not firmly hold the bobbin and required numerous parts to hold the ends of the numerous wires. As such holders were formed of light wire they were easily distorted out of shape. Due to the threepoint engagement in the present invention, the

bobbin, regardless of size, is securely and firmly different lengths by merely backing off the screw y 9, moving the member 5 to the proper position and again tightening the screw. As illustrated, the member 5 is preferably made from one piece of relatively heavy material as contrasted with prior constructions, so that it is not easily distorted from its desired shape.

It will be noted from the above description that I have provided a holder of the kind described which is very efficient and durable and which will readily receive and hold bobbins of various sizes and shapes.

Having thus described my invention, it is obvious that various immaterial modications may be made in the same without departing from the spirit of my invention; hence I do not wish to be understood as limiting myself to the exact form, construction, arrangement and combination of parts herein shown anddescribed, or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

1. In a device of the kind described, the combination of a supporting member, a bobbin-supporting-element mounted thereon and comprising a single strip of'yieldable material having one end portion thereof bent back upon itself to form a AU -shaped portion having aligned openings formed in the legs thereof receiving said supporting member, and means for locking said member in said openings, one of the legs of said U- shaped portions being extended beyond the other and bent transversely thereto, said transverse part of said leg being concave and terminating in an inverted U-shaped portion having a free leg of less length than the concave portion.

2. In a device of the kind described, the combination of a supporting member, a bobbinsupporting-element mounted thereon and comprising a single strip of yieldable material having one end portion thereof bent back upon itself to form a U-shaped portion having aligned opening formed in the `leg portions thereof receiving said supporting member, a nut, of approximately the same size, as the intermediate part of said U-shaped portion, positioned adjacent the inner side of said part, and a threaded member passing through said nut and intermediate part engageable with said supporting member to lock the latter and said bobbin-supporting-element.to l

one another, one of the legs of n said U-shaped portions being extended beyond the other and bent transversely thereto, said transverse part of said leg terminating in an inverted U-shaped portion, the leg of said U-'shaped portion secured to said supporting member being concave, and' the free leg being of less length than said concave leg to form three spaced triangularly arranged bobbin engaging portions.

3. A device of the character described adapted internally to support a bobbin having a generally frusto-conical concave surface comprising a supporting member, a bobbin-supporting-element formed of a substantially flat ribbon-like strip of resilient material mounted upon, and adjustable axially along, said supporting member, said bobbin-supporting-element being bent upon itself to provide a long arm affording spaced chord-like bobbin-engaging-portions at the ends thereof and a diverging short arm having a free end and affording av chord-like bobbin-engaging-portion adjacent said free end and substantially midway between the spaced bobbin-engaging portions on said long arm.

4. A device of the character described adapted internally to support a bobbin having a generally frusto-conical surface including a bobbin-supporting-elem'ent formed of a substantially ilat ribbon-like strip of resilient material bent upon itself to form a long arm providing spaced chord-like bobbin-engaging-portions at the ends thereof and a diverging short arm having a free end and providing a chord-like bobbin-engagingportion adjacent said free end and substantially midway between the spaced bobbin-engagingportions on said long arm, eachof said chordlike bobbin-engaging-portions being adapted to subtend an arc upon the frusto-conical surface of said bobbin and to make contactrtherewith at circumferentially-spaced points. Y 5. A device of the character described adapted internally to support a bobbin having a generally frusto-conical concave surface comprising a supporting-member, a bobbin supporting-element,

formed of a substantially flat ribbon-like strip of resilient material mounted upon, and adjustable axially along, said supporting member, said bobbin-supporting-elementbeing bent upon itself to l provide a long arm affording spaced bobbin-engaging-portions at the ends thereof and a diverging short arm having a free end and affording a bobbin-engaging-portion adjacent said free end and substantially midway between the spaced bobbin-engaging-portions on said long arm, each of said bobbin-engaging-portions being adapted tomake Contact with the frustoconical surface of said bobbin at aV pair of circumferentially-spaced points lying generally in a single radial plane of said bobbin.

6. A device of the character described adapted internally to support a bobbin having a generally frusto-conical concave surface including a bobbin-supporting-element formed of a substantially flat ribbon-like strip of resilient material bent upon itself to form a long arm providing spaced bobbin-engaging-portions at the ends thereof and a diverging short varrn having a free end and providing a bobbin-engaging-portion adjacent saidfree end and substantially midway between the spaced bobbin-engaging-portions on said long arm, each of said bobbin-engaging-portions being adapted to make contact with the frusto-conical surface of said bobbin at circumferentially-spaced points.

v BERT H. KRAFFT. 

